User Groups service let you create and manage groups made of your connected relations. This way you can shar a widget with group that will be shared with all your relations that choose to join the group. Groups's relations may come from relations you created on the go, and in the case you are the owner of managed-app also from customers/subscribers list imported from your website by the managed-app.

In addition for sharing widgets, various managed-apps uses the Grops service to allow service provider to create groups that can be associate with apps' resources. For example Shopify managed apps can use groups to create varios groups of such as Discount Club, Premium, etc'. The Groups are also available by API to be used by other non Content Glass applications.